Hair drug testing: Many street drugs (or their breakdown products in the body) are absorbed into the hair. A sample of hair can be tested for recent drug use. Hair analysis: Testing of hair for toxic exposures, such as lead or mercury poisoning.
Gas Water Heater, water not hot enough-Thermostat or Sediment. The dip tube probably disintigrated. The dip tub sends cold water to the bottom of the tank for heating when its heated it rises to the top of the tank. Its possible that the dip tube broke of and now you have cold water mixing with the hot water on top.
Demand water heaters ditch the giant storage tank and instead warm up moderate amounts of water when needed. As water flows through the device, a heating element â either a gas burner or an electrical element â warms it up. As soon as the hot water faucet is turned off, the heating element shuts down. Without a tank of water constantly warming, standby heat loss is eliminated. According to the National Association of Home Builders, tankless systems can cut 10 to 20 percent off your water-heating bill.